Portable acetylene lamp



4, 1530- H. J. ROBERTS 1, 5

PORTABLE ACETYLENE 'LAIP vFiled. Oct. 27, 1925 I INVENTOR.

Q y g rfimf' A TTORNEYS.

, Patented Feb. 4, 1930- UNITED STATES PATENT OFFICE HAROLD J. ROBERTS, OF NIAGARA FALLS, NEW YORK, ASSIGNOR TO OXWELD ACETY- LENE COMPANY, OF NEWARK, NEWJERSEY, A CORPORATION OF WEST VIRGINIA PORTABLE ACETYLENE LAM]? Application filed October 27, 1925. Serial No. 65,167.

This invention relates to portable acetylene I lamps and consists of an acetylene generator and lamp assembly in which is included an auxiliary carbide storageor supply chamber. This auxiliary supply chamber is arranged in compact relation with the other elements of the lamp assembly and is adapted to permit of the ready recharging of the gas generator the charge from separate cans.

froma supply of carbide stored in said chamber.

' Heretofore when the supply of carbide in the gas-generating chamber has become exhausted it has been customary to replenish become misplaced or are not at hand when needed. It has also been proposed to provide a relatively small auxiliary gas-generating chamber which is adapted to be put into operation fora short time while the main gas generator is being recharged. However, such proposals have had for their object the contin-nous production of light from a given lamp and have not sought to do away with the necessity for separate cans of carbide to be used in recharging.

The invention has for its principal ob ect the provision of means for maintaining a sup ply of carbidealways at hand for recharging' the gas generator of the lamp'when the ,1 tion will appear from the following detailed supply of carbidether'ein shall have become exhausted. 7

- Other objects and advantages of the invendescription taken in connection with the accompanying drawing, in which the figure is a diagrammatic view partly in section of a of thelamp, as bya screw threaded connection orthe like, is alower section which comprises two containers forming chambers 6 and 7 adapted to be used, respectively, as a gas generating. chamberand a supplemental -carbide'storage chamber. The larger'container extends up about the inner container and is preferablyintegrally joined to theside These often walls thereof on a line near the upper portion of the inner container. This arrangement serves to protect the gas generating chamber from rupture or puncture due to rough usage. An opening is provided at the lower end of the storage chamber 7, which opening is closed by a screw-threaded plug 8 or other suitable means.

When the lamp is to be put in operation, the chambers 6 and 7 are filled with carbide and the lower section 5 is connected to the upper section 1. The generation of acetylene is controlled by regulating the flow of water from the chamber 2 into the chamber 6 in known manner. When the supply of carbide in the gas generating chamber shall have become exhausted, the lower section 5 is disconnected from the upper section, the chamber 6is emptied of its contents and refilled with carbide from the storage chamber 7 The lamp is then again ready for use.

While my invention is shown as applied to a miners lamp it is equally applicable to hand lamps and other portable lamps of general application.

Various modifications in the construction of my new lamp and storage chamber assembly may be made without departing from the scope of my invention as set forth in the appended claim.

I claim:

In a portable acetylene light of the type having an upper lamp section comprising a water reservoir and a burner, a lower section comprising an outer carbide storage chamber provided with an opening and a closure therefor, and a vessel joined to said storage chamber near its upper end and depending within said storage chamber, the lower section being adapted to be connected to the upper section whereby a gas generating space is formed within said vessel and closed at its upper end by said upper lamp section, said carbide storage chamber heing of such size to contain at leasta charge of carbide. 1 In testimony whereof, I afiix my signature.

HAROLD J. ROBERTS. 

